CVE-2017-3748 Privilege escalation in Lenovo Vibe and Lenovo China-only Moto Mobile Phones

What is CVE-2017-3748?

CVE-2017-3748 is a high-severity vulnerability in Google Android, published on 29 Jun 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

On Lenovo VIBE mobile phones, improper access controls on the nac_server component can be abused in conjunction with CVE-2017-3749 and CVE-2017-3750 to elevate privileges to the root user (commonly known as 'rooting' or "jail breaking" a device).

Which versions are affected by CVE-2017-3748?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2017-3748?

No fix has been published for CVE-2017-3748 yet. Limit exposure of the affected software until one is available.

Is CVE-2017-3748 being exploited?

There is no known exploitation of CVE-2017-3748 in the wild and no public exploit code.

Other vulnerabilities in Google Android

• CVE-2026-58704 Google Pixel Improper Authorization Exploited High 8.8
• CVE-2025-48543 Android Runtime Use-After-Free Exploited High 8.8
• CVE-2023-35674 Android Framework Privilege Escalation Exploited High 8.8
• CVE-2025-48595 Android Framework Integer Overflow Exploited High 8.4
• CVE-2024-32896 Android Pixel Privilege Escalation Exploited High 8.1

All Google Android vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-g7gx-c2jg-7cg5.